Magnetic relaxation in (Bi, Pb)-2223 superconducting ceramics doped with α-Al2O3 nanoparticles

Authors

  • M. Hernández Wolpez Departamento de Física de la Facultad de Informática y Ciencias Exactas, Universidad de Camaguey "Ignacio Agramonte Loynaz" Camaguey, Cuba
  • L.C. Rivero Gutiérrez Departamento de Física de la Facultad de Informática y Ciencias Exactas, Universidad de Camaguey "Ignacio Agramonte Loynaz" Camaguey, Cuba
  • I. García-Fornaris Departamento de Ciencias Basicas Universidad de Granma, Apartado. 21, Box 85100, Bayamo, Cuba
  • E. Govea-Alcaide Departamento de Física, Universidade Federal do Amazonas, Av. General Rodrigo Octávio, 6200 Coroado I, 69077-000 Manaus, Brazil.
  • F. Abud Instituto de Fisica, Universidade de Sao Paulo, 66318, 05314-970, Sao Paulo, SP, Brasil
  • R.F. Jardim Instituto de Física, Universidade de Sao Paulo, CP 66318, 05314-970, Sao Paulo, SP, Brazil.
  • P. Muné Departamento de Física, Universidad de Oriente, Patricio Lumumba s/n, P. O. Box 90500, Santiago de Cuba, Cuba.

DOI:

https://doi.org/10.31349/RevMexFis.66.42

Keywords:

Bi-based cuprates, magnetic relaxation, vortices, doping, planar defects.

Abstract

A preliminary study of the magnetic relaxation in (Bi, Pb)-2223 superconducting ceramics doped with α-Al2O3 nanoparticles is presented, taking as starting point the measurements of the M(t) dependence, both in samples in the form of powder as in pellet. The relaxation of the three types of vortices that can exist inside these materials is analyzed, emphasizing on the intragranular region
where the planar defects exist and, consequently, Abrikosov-Josephson vortices emerge. Finally, interesting results of the comparison between the behavior of the samples in the form of powder and in the form of pellet are shown from the estimation of the pinning energy of the vortices.

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Published

2019-12-28

How to Cite

[1]
M. Hernández Wolpez, “Magnetic relaxation in (Bi, Pb)-2223 superconducting ceramics doped with α-Al2O3 nanoparticles”, Rev. Mex. Fís., vol. 66, no. 1 Jan-Feb, pp. 42–46, Dec. 2019.

Issue

Vol. 66 No. 1 Jan-Feb (2020): Revista Mexicana de Física

Section

05 Condensed Matter

License

Authors retain copyright and grant the Revista Mexicana de Física right of first publication with the work simultaneously licensed under a CC BY-NC-ND 4.0 that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.